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Academic literature on the topic 'Benzimidazolium salt'
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Journal articles on the topic "Benzimidazolium salt"
Su, Jia-Hong, Gene-Hsiang Lee, Shie-Ming Peng, and Ching-Wen Chiu. "A spiroborate-based anionic bis-N-heterocyclic carbene." Dalton Trans. 43, no. 8 (2014): 3059–62. http://dx.doi.org/10.1039/c3dt52131a.
Full textWang, Cheng Jun, Shan Shan Gong, and Qi Sun. "Synthesis of Two Analogs of AKT Inhibitor-IV via Amine-Exchange Reactions." Advanced Materials Research 1046 (October 2014): 108–11. http://dx.doi.org/10.4028/www.scientific.net/amr.1046.108.
Full textAmudha, M., P. Praveen Kumar, and G. Chakkaravarthi. "Crystal structure of benzimidazolium salicylate." Acta Crystallographica Section E Crystallographic Communications 71, no. 10 (September 26, 2015): o794—o795. http://dx.doi.org/10.1107/s2056989015017764.
Full textSepassi, Kia, Tapan Sanghvi, and Samuel H. Yalkowsky. "The besylate salt of carbendazim: 2-(methoxycarbonylamino)benzimidazolium benzenesulfonate." Acta Crystallographica Section E Structure Reports Online 62, no. 10 (September 13, 2006): o4403—o4404. http://dx.doi.org/10.1107/s1600536806035537.
Full textAkkoç, S., S. Çağlar Yavuz, B. Türkmenoğlu, İ. Özer İlhan, and M. Akkurt. "Single Crystal, DFT and Docking Studies of a Benzimidazolium Salt." Crystallography Reports 65, no. 7 (November 25, 2020): 1173–78. http://dx.doi.org/10.1134/s1063774520070032.
Full textSepassi, Kia, Gary S. Nichol, and Samuel H. Yalkowsky. "The napsylate salt of carbendazim: 2-(methoxycarbonylamino)benzimidazolium naphthalene-1-sulfonate." Acta Crystallographica Section E Structure Reports Online 62, no. 11 (October 25, 2006): o5172—o5173. http://dx.doi.org/10.1107/s1600536806035549.
Full textLiu, Rui, Ran Huo, Yue Bi, Zhixiang Zhao, and Qingxiang Liu. "Preparation and Intramolecular CC Coupling Reaction for Bis-benzimidazolium Salt." Chinese Journal of Chemistry 33, no. 9 (July 22, 2015): 1037–40. http://dx.doi.org/10.1002/cjoc.201500375.
Full textBai, Ying, Jing-Kun Yuan, Hua Wang, Guo-Long Pan, and Hui-Lu Wu. "Tris(1H-benzimidazol-3-ium-2-ylmethyl)amine tris(2,4,6-trinitrophenolate) acetonitrile disolvate." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (May 31, 2012): o1922. http://dx.doi.org/10.1107/s160053681202329x.
Full textLiu, Qing-Xiang, Ze-Liang Hu, and Zhi-Xiang Zhao. "A new fluorescent-colorimetric chemosensor for fluoride anion based on benzimidazolium salt." Tetrahedron 74, no. 46 (November 2018): 6710–16. http://dx.doi.org/10.1016/j.tet.2018.10.002.
Full textIwamoto, Ken-ichi, Masako Hamaya, Naoki Hashimoto, Hitomi Kimura, Yumiko Suzuki, and Masayuki Sato. "Benzoin reaction in water as an aqueous medium catalyzed by benzimidazolium salt." Tetrahedron Letters 47, no. 40 (October 2006): 7175–77. http://dx.doi.org/10.1016/j.tetlet.2006.07.153.
Full textDissertations / Theses on the topic "Benzimidazolium salt"
Taylor, Kerri Shelton. "Rational Design and Anti-proliferative Activity Of Substituted N,N'- bis(arylmethyl)imidazolium Salts as Varied Therapeutics." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1461063089.
Full textHausner, Sven H. "Part I: Dibenzotetraaza Crown Ethers. Part II: Synthesis and Characterization of Chlorophenyplumbates." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin998489402.
Full textElie, Claude-Rosny. "Propriétés anionophores et antibactériennes de sels d’imidazolium et benzimidazolium." Thèse, 2016. http://hdl.handle.net/1866/18433.
Full textThe emergence of antibiotic resistant bacteria is a serious problem that our health system faces. One recently proposed strategy to effectively and irreversibly kill these multi-resistant microorganisms is to directly target the integrity of their membrane, using small molecules able to induce an electrolyte imbalance. Moreover, the same molecules may find applications in the treatement od diseases originating from the dysfunction of ion transport, such as cystic fibrosis. Herein we present different imidazolium and benzimidazolium salts N,N-disubstituted with both antimicrobial and ionophoric potential. We first performed mechanistic studies where different structural changes have been made to the imidazolium and benzimidazolium salts to observe how these modifications modulate the efficiency of the anion transport in artificial membrane liposomes. We were able to conclude that the species formed of two aromatic arms phenylethynylbenzyl arranged symmetrically on either side of an imidazolium cation, induced a better transport of chloride anions, through a membrane of liposomes at the micromolar range. In addition, monocations imidazolium and benzimidazolium flanked with an bis(trifluorométhylsulfonyl)amide anion led to faster ionophore activity. Moreover, based on these results we presented the first example, to our knowledge, for an anions and cations benzimidazolium-based transporter, acting as well in liposomes as in bacteria. Secondly, the best anionophore agents were analyzed in more complex bacterias and human red blood cells membranes to study their bactericidal potential and innocuity. Among all the benzimidazolium salts studied, we identified one compound, which presents interesting antibacterial properties as a result of its ability to induce an electrolytic imbalance and to disrupt the integrity and the potential of the bacterial membranes. At the same time this antibacterial agent presented a low toxicity to human cells in bacteriostatic range concentrations.
JHANG, JHIH-HAO, and 張志豪. "Synthese and mesophase properties of hydroxyl functionalized benzimidazolium salts." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/53317652292046125727.
Full textYuan-Tsung, Lee, and 李淵琮. "Preparation and characterization of bispenol A functionalized imidazolium, benzimidazolium salts." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/18599782723873269111.
Full text高雄師範大學
化學系
97
The aim of this work is to use unsymmetrical imidazolium and benzimidazolium salts containing hexanoic acid (C5H10COOH) functionalized cations to synthesize bisphenol A functionalized imidazolium and benzimidazolium salts with anions of Br-, BF4-, and ZnBr42- . The properties of these compounds were investigated by polar optical microscope, differential scanning calormetry, and powder X-Ray diffractometer. The results exhibited that anion species played an important role on the liquid crystalline properties of the imidazolium and benzimidazolium salts. The possible structures of these compounds had been proposed to explain the packing of the compounds in liquid crystal phase.
Chiu, Hsien-Che, and 邱顯哲. "Concentration- and temperature-dependent phase transformations of dialkyl benzimidazolium salts." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/64942944128059204212.
Full text國立東華大學
物理學系
101
In this study, we synthesized of dialkyl benzimidazolium salts, which are so-called 1,3-ditetradecyl benzimidazolium chloride. The symmetric dialkyl benzimidazolium salts can self-assemble into crystalline thin-films on highly orientated pyrolytic graphite (HOPG) subtrates. The chemical structure analysis of the thin-films was characterized by Raman scattering spectroscopy. The phase transformations were characterized by scanning tunneling microscopy (STM) and variable-temperature X-ray diffractometry (XRD). From results of the STM and variable-temperature XRD, the phase transformations of the thin-films were strongly dependent on concentrations and temperatures. The crystalline phases can transform between the solid and liquid crystalline states. We also exploited scanning tunneling spectroscopy (STS) to get tunneling current-voltage (I-V) curves on local regions of the thin film. The I-V curve results indicated the benzimidazolium thin-films to be a n-type-like semiconductor.
Lin, Yi-Ren, and 林湙人. "The Study of Bis-benzimidazolium Salts in Suzuki-Miyaura Coupling Reaction and Asymmetric C-C Formation." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/56345569335107024775.
Full text國立中興大學
化學系所
104
Recently, the N-heterocyclic carbene based Pd catalysts (Pd–NHC) have been widely used in the Suzuki coupling reaction. However, most of the ligands are less reactive in aqueous media. Therefore, organic solvent is required to be used for these reactions. In addition, the biaryl moiety is a central part in the structure of many natural products and drugs, therefore, the synthesis of biaryl structure has been an important topic in organic synthesis. The bis-benzimidaolium salts 78 have been successfully synthesized from commercially available and inexpensive o-phenylenediamine through a series of simple reactions in good yields. These catalysts derived by Pd(OAc)2 and bis-benzimidazolium salts are air and moisture stable, both in the solid state and in solution. Its high efficacy for Suzuki cross-coupling reaction of aryl bromides are found in aqueous media in the presence of Pd-catalyst and reduce the consumption of organic solvent. Functionalized aryl bromides, such as ketone, aldehyde, ester and nitro, are well-tolerated at 40ºC with excellent yields (86-99%). Di-ortho-substituted biaryls could be accomplished at 60ºC in 89-99% yields. In summary, our ligand is able to reduce costs significantly and simplify reaction operations effectively if it is applied to industrial processes.
Yu-Lin, Change, and 張郁琳. "Synthesis and the studies of ionic crystals of hexanoic acid functionalized imidazolium, benzimidazolium salts, and znic(Ⅱ) complexes." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/55901170621126807456.
Full text國立高雄師範大學
化學系
96
The aim of this work is to synthesize and investigate the liquid crystalline properties of unsymmetrical imidazolium and benzimidazolium salts containing hexanic acid (C5H10COOH) functionalized cations with anions of Br-, NO3-, and BF4-. Both liquid crystalline behavior of [Cn-Im-COOH-X] and [Cn-Bim-COOH-X], (n=12, 14, 16, 18; X=Br-, NO3-, BF4-,) where were studied by polarized optical microscopy, differential scanning calorimetry, and powder X-Ray diffractometer. Single crystal structure of [C14-Im-C5COOH-NO3] shows that the molecules self-organizes to form a bilyered structure by hydrogen bonding and hydrophobic interaction. The presence of extend hydrogen bonding interactions in these imidazolium salts allows them to have a wide temperature rang of mesophases. Anions have a profound effect on the phase transition temperature, suggesting the both ionic and hydrogen bonding interactions play dominate roles in the mesomorphic behavior of these liquid crystalline compounds. Metal containing salts [Zn-(Cn-Im-C5COOH)2-Br4)] and [Zn-(Cn-Bim-C5COOH)2-Br4)], where n=12,14,16,18, were prepared and some preliminary results were obtained.
Sriana, Tun, and Tun Sriana. "Development of New Lithium Salt Based on Bis(trifluoroborane)benzimidazolide for Lithium Ion Battery Electrolytes–a First Principles Study." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/83203909803488307241.
Full text國立臺灣科技大學
化學工程系
103
The advance in high energy density, superior rate capacity, high capacity and long life cycle made lithium ion batteries become the dominant power source for portable electronic devices. Nevertheless, there are several challenges that need to be addressed in the improvement of lithium ion batteries such as improvement of high-temperature performance and minimizing capacity fading during prolonged charge-discharge cycling. Lithium salts are one of the significant elements of LIBs that play a fundamental role in the performance and the safety of the battery. In this study, we developed new potential replacements of LiPF6 salt based on bis(trifluoroborane)-benzimidazole as parent structure. The oxidative stability, film forming and gas releasing ability of the selected designed salt will also be studied. The effects of different substitution on imidazole hydrogen with electron withdrawing group (-CH3, -CF3 or -C2F5) and benzene ring with electron donating group (-F, -CHO, -CN, -SO2CH3 and -NO2) on parent structure are studied with respect to ion pair dissociation energies and intrinsic anion oxidation potential of the molecule. Based on our calculations, we have found that, ion pair dissociation energies and intrinsic anion oxidation potentials of the anions mainly affected by the position and type of substituents introduced on the parent structure. Compared to -CH3, substitution at C2 position of the parent benzimidazole (B-) moiety by -CF3 results an increase in anion oxidation stability. However, we observed a negligible change in intrinsic anion oxidation potential as the length of the fluoroalkyl group increased to -C2F5. The most promising anions are generated by considering double-substitution at C2 and C5 positions. Among the possible anions, bis(trifluoroborane)-5-nitro-2-(trifluoromethyl) benzimidazolide (BTNTB-), with the calculated intrinsic anion oxidation potential of 5.50 V vs. Li+/Li, can be considered as a potential candidate for high voltage Li-ion battery. In order to improve the performance of lithium ion batteries, new anion structures are proposed by considering mono-substitution at R1 position with electron donating group (-NH2, -OCHF3, -CH3) and electron withdrawing group (-CF3, -CN). The combination of different molecule substituted on R1, R2, R3, R4, and R5 to form double and triple substitution was also studied. Ion dissociation energy and intrinsic anion oxidative stability of the molecule were used to investigate the effects of different molecule substitution. Based on our calculation, we found that the position and type of molecule substituents on the parent structure affect the ion dissociation energies and intrinsic oxidative potentials. Compared to electron donating group, electron withdrawing group resulted in an increase in anion oxidation stability. Simillary, electron donating group substituted on R1 combined with different molecule on R2, R3, R4, and R5 resulted in a lower oxidation potential compared to electron withdrawing group. The most promising anion are generated by substituted electron withdrawing group substitution at meta position. Among the possible anions, bis(trifluoroborane)-7,5,2-tricyanobenzimidazole (BZ3C-) with oxidation potential of 5.72 V vs. Li+/Li which has higher oxidation potential compared to bis(trifluoroborane)-5-nitro-2-(trifluoromethyl) benzimidazolide (BTNTB-). The effects of BTTB- on the oxidative decomposition of ethylene carbonate (EC) are also studied. It is found that the presence of BTTB- anion significantly reduces EC oxidation stability. Compared to PF6- and BOB-, which are commonly used salts, in BTTB-e based electrolytes, EC would undergo oxidative decomposition by overcoming a relatively high energy barrier to form a thermodynamically stable product, CO2 and acetaldehyde.